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Search Results: 1 - 10 of 40179 matches for " Lu Pei "
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MicrobIdentifier: A Microbial Identification Software Based on Mass-Spectrometry  [PDF]
Feng LIU, Lu LI, Chi ZHANG, Lingbing WANG, Pei LI
Journal of Software Engineering and Applications (JSEA) , 2009, DOI: 10.4236/jsea.2009.23028
Abstract: As the technology of microbial identification by mass cataloging has been widely used, we have developed the micro-bial identification software, MicrobIdentifier, which integrates and automates different steps in the procedure of rapid species identification based on mass-spectrometry. This software is written in Java for cross-platform intention.
A Study on Eco-Tourism and Sustainable Development of Economic Underdevelopment Areas—An Example from Kanas Nature Reserve, Xingjiang Province, Northwest China  [PDF]
Jianxiong Qin, Pei Zhang, Guiping Deng, Lu Chen
Smart Grid and Renewable Energy (SGRE) , 2014, DOI: 10.4236/sgre.2014.57016
Abstract: Based on the assessment of eco-tourism resource and its location advantage, the paper has discussed the principle, projects, and facilities of eco-tourism, in the Kanas Nature Reserve in Xinjiang as well as the direction of related industries. To solve the problems occurred at present in the Kanas Nature Reserve, strategic counter measures of sustainable development of eco-tourism have also been put forward, including: 1) The establishment of eco-tourism planning legislative system of eco-tourism; 2) The establishment of environmental protection planning system of eco-tourism; 3) The establishment of environmental audit system of eco-tourism; 4) The establishment environmental legislation and law enforcement system of eco-tourism; 5) The establishment ethic education and management system of eco-tourism.
A variant in interleukin-2 gene is associated with repeated spontaneous abortion in Ningxia Han people  [PDF]
Liguo Pei, Fan Yang, Chuan Zhang, Mengjing Guo, Junhua Bao, Hong Lu, Zhenghao Huo
Open Journal of Obstetrics and Gynecology (OJOG) , 2013, DOI: 10.4236/ojog.2013.35A2006
Abstract:

Background: Recurrent spontaneous abortion (RSA) is defined as the occurrence of three or more consecutive spontaneous abortion prior to 20 weeks from the last menstrual period. It affects approximately 1% to 2% of women, and about 40% - 80% of RSA are still remained unexplained. In recent years, a lot of studies suggest that RSA is caused by the immune factors. T helper 1(Th1)-type immunity is associated with unsuccessful pregnancy especially in women with RSA, while Th2-type immunity is associated with pregnancy success. Interleukin (IL)-2 may influence Th1/Th2 immune responsiveness and has been implicated association with RSA. Aim: The aim of this study was to investigate the association of the interleukin 2 (IL-2) promoter polymorphisms at the site 330 A/C (rs2069762) with RSA. Methods: The study group comprised 189 women with RSA, and the control group consisted of 187 healthy pregnant women. Gene polymorphisms were detected by the technique of polymerase chain reaction restriction fragment length polymorphism. Results: The frequency of genotype 330C/C was significant higher (χ2 = 7.266, p = 0.007, OR = 0.362, 95% CI = 0.169 - 0.777) in the control group than in the patient group. And the frequency of the -330Aallele was significant higher (χ2 = 11.862, p = 0.001, OR = 1.741, 95% CI = 1.268 - 2.389) in the patient group than in the control group. Conclusions: This study indicated that the IL-2-330Aallele may be considered as a risk factor for RSA. CA mutation is may associated with RSA in Ningxia Han people.

DNA damaging effects of carbofuran and its main metabolites on mice by micronucleus test and single cell gel electrophoresis
Pei Zhou,Baofeng Liu,Yitong Lu
Science China Life Sciences , 2005, DOI: 10.1007/BF02889800
Abstract: The DNA damaging effects of the carbamate pesticide carbofuran and its four metabolites (carbofuranphenol, 3-ketocarbofuran, 3-hydrocarbofuran and nitrosocarbofuran) on mice were evaluated by single cell gel electrophoresis (SCGE) assay and micronucleus test. KM mice were exposed to test compounds with different doses of 0.1, 0.2 and 0.4mg/kg through intraperitoneal injection two times with an internal of 24 h, and then killed by cervical dislocation 6 h after the second injection. In SCGE assay, isolated mice peripheral blood lymphocytes were employed to determine DNA damaging degree after a 1 h treatment by test compounds and a following electrophoresis. Carbofuran and carbofuranphenol showed negative results in both test and had no obvious toxicity. 3-hydrocarbofuran and nitrosocarbofuran were positive. 3-ketocarbofuran could not induce micronucleus formation but caused significant DNA migration in SCGE test. These tests revealed that 3-ketocarbofuran, 3-hydrocarbofuran and nitrosocarbofuran are potential mutagesis and further research is needed.
CANONICAL FORMS OF MINIMAL GROBNER BASES OF POLYNOMIAL IDEALS OVER LOCAL ARTINIAN PRINCIPAL IDEAL RINGS
Artin局部主理想环上多项式理想的Grobner基的标准型

Pei Zhong LU,
陆佩忠

系统科学与数学 , 2001,
Abstract: 本文给出Artin局部主理想环上单变元多项式理想的极小Gr
The Octet Meson and Octet Baryon Interaction with strangeness and the $Λ(1405)$
Jun He,Pei-Liang Lu
Physics , 2015, DOI: 10.1142/S0218301315500883
Abstract: The octet meson and baryon interaction with strangeness $S=-1$ is studied fully relativistically with chiral Lagrangian. In this work, a Bethe-Salpeter equation approach with spectator quasipotential approximation is applied to study the reactions $K^-p\to MB$ with $MB=K^-p,\bar{K}^0n, \pi^-\Sigma^+,\pi^0\Sigma^0, \pi^+\Sigma^-$ and $\eta \Lambda$ with all possible partial waves and theoretical results are comparable with experimental data. It is found that the Weinberg-Tomozawa potential derived from the lowest order chiral Lagrangian only provides the contributions from partial waves with spin-parities $J^P=1/2^+$ and $1/2^-$. Two-pole structure of the $\Lambda(1405)$ is confirmed with poles at $1383+99 i$ and $1423+14i$ MeV. The lower and higher poles originate from $\Sigma \pi$ interaction as a resonance and $\bar{K}N$ interaction as a bound state, respectively.
Research on Blanket Jamming to Beidou Navigation Signals Based on BOC Modulation  [PDF]
Pei Wang, Xiaochun Lu, Rui Wang
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2016, DOI: 10.4236/ijcns.2016.95012
Abstract: Aiming at the issue of influence of blanket jamming on performances of Beidou navigation signals, through studying Beidou signals based on the BOC modulation technology, establishing a blanket jamming mathematical model, and performing modeling and simulation on multiple jamming technologies, to attain the jamming curves of time domains and frequency domains of Beidou signals, and the correlation curve of the signal-to-jamming rate and the bit error rate under blanket jamming, and thus realizing evaluation on the jamming performance.
RAPD and Internal Transcribed Spacer Sequence Analyses Reveal Zea nicaraguensis as a Section Luxuriantes Species Close to Zea luxurians
Pei Wang,Yanli Lu,Mingmin Zheng,Tingzhao Rong,Qilin Tang
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0016728
Abstract: Genetic relationship of a newly discovered teosinte from Nicaragua, Zea nicaraguensis with waterlogging tolerance, was determined based on randomly amplified polymorphic DNA (RAPD) markers and the internal transcribed spacer (ITS) sequences of nuclear ribosomal DNA using 14 accessions from Zea species. RAPD analysis showed that a total of 5,303 fragments were produced by 136 random decamer primers, of which 84.86% bands were polymorphic. RAPD-based UPGMA analysis demonstrated that the genus Zea can be divided into section Luxuriantes including Zea diploperennis, Zea luxurians, Zea perennis and Zea nicaraguensis, and section Zea including Zea mays ssp. mexicana, Zea mays ssp. parviglumis, Zea mays ssp. huehuetenangensis and Zea mays ssp. mays. ITS sequence analysis showed the lengths of the entire ITS region of the 14 taxa in Zea varied from 597 to 605 bp. The average GC content was 67.8%. In addition to the insertion/deletions, 78 variable sites were recorded in the total ITS region with 47 in ITS1, 5 in 5.8S, and 26 in ITS2. Sequences of these taxa were analyzed with neighbor-joining (NJ) and maximum parsimony (MP) methods to construct the phylogenetic trees, selecting Tripsacum dactyloides L. as the outgroup. The phylogenetic relationships of Zea species inferred from the ITS sequences are highly concordant with the RAPD evidence that resolved two major subgenus clades. Both RAPD and ITS sequence analyses indicate that Zea nicaraguensis is more closely related to Zea luxurians than the other teosintes and cultivated maize, which should be regarded as a section Luxuriantes species.
State Derivation of a 12-Axis Gyroscope-Free Inertial Measurement Unit
Jau-Ching Lu,Pei-Chun Lin
Sensors , 2011, DOI: 10.3390/s110303145
Abstract: The derivation of linear acceleration, angular acceleration, and angular velocity states from a 12-axis gyroscope-free inertial measurement unit that utilizes four 3-axis accelerometer measurements at four distinct locations is reported. Particularly, a new algorithm which derives the angular velocity from its quadratic form and derivative form based on the context-based interacting multiple model is demonstrated. The performance of the system was evaluated under arbitrary 3-dimensional motion.
Dependence of magnetic field just inside the magnetopause on subsolar standoff distance: Global MHD results
Ming Wang,JianYong Lu,ZiQian Liu,ShiXin Pei
Chinese Science Bulletin , 2012, DOI: 10.1007/s11434-011-4961-6
Abstract: The subsolar magnetopause is the boundary between the solar wind and the Earth’s magnetosphere, where reduced solar wind dynamic pressure is equal to the magnetic pressure of the Earth’s outer magnetosphere. We use a global magnetohydrodynamic (MHD) model to estimate the ratio f of the compressed magnetic field just inside the subsolar magnetopause to the purely dipolar magnetic field. We also compare our numerical results to a similar work by Shue, which used Time History of Events and Macroscale Interactions during Substorms (THEMIS) data. Our results show that the ratio f is linearly proportional to the subsolar magnetopause standoff distance (r 0) for both the northward and southward interplanetary magnetic field, properties consistent with Shue but with a smaller proportionality constant. However, previous theoretical studies show that f is nearly independent of the subsolar standoff distance. The global model results also show that f is smaller for the southward Interplanetary Magnetic Field (IMF) under the same r 0, and that the proportionality constant for the southward IMF is larger than that for the northward IMF. Both conclusions agree with statistical results from observations by Shue.
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